CC: [email protected]
CC: [email protected]
TO: Kan Liang <[email protected]>
CC: Peter Zijlstra <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1
commit: 61b985e3e775a3a75fda04ce7ef1b1aefc4758bc perf/x86/intel: Add perf core 
PMU support for Sapphire Rapids
date:   10 months ago
:::::: branch date: 18 hours ago
:::::: commit date: 10 months ago
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

   In file included from arch/x86/events/intel/ds.c:
   arch/x86/events/perf_event.h:87:2: warning: Non-boolean value returned from 
function returning bool [returnNonBoolInBooleanFunction]
    return event->hw.flags & PERF_X86_EVENT_TOPDOWN;
    ^
   arch/x86/events/perf_event.h:987:2: warning: Non-boolean value returned from 
function returning bool [returnNonBoolInBooleanFunction]
    return hwc->flags & PERF_X86_EVENT_PAIR;
    ^
   arch/x86/events/intel/ds.c:1614:28: warning: Either the condition 
'basic==NULL' is redundant or there is pointer arithmetic with NULL pointer. 
[nullPointerArithmeticRedundantCheck]
    void *next_record = basic + 1;
                              ^
   arch/x86/events/intel/ds.c:1621:12: note: Assuming that condition 
'basic==NULL' is not redundant
    if (basic == NULL)
              ^
   arch/x86/events/intel/ds.c:1614:28: note: Null pointer addition
    void *next_record = basic + 1;
                              ^
   arch/x86/events/intel/ds.c:41:16: warning: union member 
'intel_x86_pebs_dse::ld_reserved' is never used. [unusedStructMember]
     unsigned int ld_reserved:24;
                  ^
   arch/x86/events/intel/ds.c:45:16: warning: union member 
'intel_x86_pebs_dse::st_reserved1' is never used. [unusedStructMember]
     unsigned int st_reserved1:3;
                  ^
   arch/x86/events/intel/ds.c:48:16: warning: union member 
'intel_x86_pebs_dse::st_reserved2' is never used. [unusedStructMember]
     unsigned int st_reserved2:26;
                  ^
>> arch/x86/events/intel/ds.c:54:16: warning: union member 
>> 'intel_x86_pebs_dse::ld_reserved3' is never used. [unusedStructMember]
     unsigned int ld_reserved3:26;
                  ^

vim +54 arch/x86/events/intel/ds.c

ca037701a02533 arch/x86/kernel/cpu/perf_event_intel_ds.c Peter Zijlstra   
2010-03-02  30  
ca037701a02533 arch/x86/kernel/cpu/perf_event_intel_ds.c Peter Zijlstra   
2010-03-02  31   */
ca037701a02533 arch/x86/kernel/cpu/perf_event_intel_ds.c Peter Zijlstra   
2010-03-02  32  
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  33  union intel_x86_pebs_dse {
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  34        u64 val;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  35        struct {
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  36                unsigned int ld_dse:4;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  37                unsigned int ld_stlb_miss:1;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  38                unsigned int ld_locked:1;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  39                unsigned int ld_data_blk:1;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  40                unsigned int ld_addr_blk:1;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  41                unsigned int ld_reserved:24;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  42        };
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  43        struct {
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  44                unsigned int st_l1d_hit:1;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  45                unsigned int st_reserved1:3;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  46                unsigned int st_stlb_miss:1;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  47                unsigned int st_locked:1;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  48                unsigned int st_reserved2:26;
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  49        };
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  50        struct {
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  51                unsigned int st_lat_dse:4;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  52                unsigned int st_lat_stlb_miss:1;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  53                unsigned int st_lat_locked:1;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28 @54                unsigned int ld_reserved3:26;
61b985e3e775a3 arch/x86/events/intel/ds.c                Kan Liang        
2021-01-28  55        };
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  56  };
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  57  
f20093eef5f784 arch/x86/kernel/cpu/perf_event_intel_ds.c Stephane Eranian 
2013-01-24  58  

---
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